Oven-burner unit for gas-stoves.



UNITED STATES TO DETROIT STOVE WORKS, 0F DETROIT,

PATENT oFFIoE.

HENRY D. SCHALL AND RANSOM W. DAVENPORT, OF DETROIT, MICHIGAN, ASSIGNORS MICHIGAN, A CORPORATION OFMICHIGAN.

OVEN-BURNER UNIT FOR GAS-STOVES.

Original application led January 31, 1916, Serial No. 75,417. Divided Specification of Letters Patent.

and this application iled June 3,

1918. Serial No. 237,964.

I useful Improvements in Oven-Burner Units for Gas-Stoves, of which the following is a specification, reference being had therein tov t 1 e accompanying drawing.

The invention'relates to gas stoves and in its broader features the present application forms a divisional case of an earlier application Serial No. 75,417, tiled January 31, 1916. The invention also comprises certain improved features as hereinafter set forth.

In the drawings:

Figure l is a perspective view of a gas rznge to which our improvements are apied;

p Fig. 2 is a sectional plan thereof;

Fig. 3 is a longitudmal section through the lighter for the burner;

F ig'. 4 is a cross section thereof;

Fig. 5 is a sectional plan view showing a modied construction of lighterjand Fig. 6 is a plan View of the range showanother modification.

n the present state of the art with certain types of gas range it is customary to use a single burner for heating the bottom of one oven and the top of the broiler or toaster oven. `To distribute the heat uniformly over the bottom area it is usual to have a lurality of burner tubes in the form of a -tube or otherwise connected to be controlled from a single burner. This, however, has the disadvantage that it is diilicult to obtain a low fire-on account of the, large openfjet area. In other types of range a plurality of burner tubes having indepcndburners it is necessary to provides. lighter and usually this is supplied-with gas from an independent valve also located at the end of the oven. The front manifold is undesirable as the hotl air from the oven whenv entering the mixing tube interferes with proper combustion in the burner, while the door when dropped interferes with access to the valve.

It isthe object of the present invention to provide a construction of oven burner unit'which is applicable to a gasrange having ovens and an adjacent open top section, said unit comprising a plurality of burner sections having independent controlling valves, and valves being located upon the manifold at the front 0f the open top and in alinement with the valves controlling the open top burners. The unit is further provided With a lighter which derives its gas from the burner sections, dispensing with the necessity of any independent source of supply or independent controlling valve. Still further, the construction is such that the gas is conveyed to the independent burner sections through tubes located in the entering the oven section through the side Patentednec. 31, 1918.

Wall thereof.Y Thus the construction is one which overcomes serious objections to the various constructions heretofore used, such for instance as the danger of explosion of gas escaping from an unlighted burner section While another lighted section 1s in use,

and also the difficulty of obtaining sutciently low heat where a single burner is used. With our construction one section of the burner will be automaticalljv lighted from the other so that either or both of thc sections may be used without danger, and a perfect regulation of the heat obtained.

As shown, A is thc frame of the stove. B is the open top section, C is the baking oven arranged at one side of the open top and above the same. and D is the lower or broiler oven beneath the oven C and at Ythe side of the pan or casing beneath the open top. The. ovens C and Al') are separated from cach other b v a shectmietal partition E which is removable when desired to throw both comY partmcnts into one. At the frort of the open top section is arranged the usual gas supply tube or manifold F for feeding a series of burners G G', etc., controlled by valves H H', etc. *The Valves H* and H for controlling the broiler and oven burner are also arranged in connectionwith the .tube

and in alinement with the valves` for the' 'open top burners at the end` ad]acent to the f oven. Our improved burner unit comprises a plurality ofsections extending transversely I of the oven or parallel to the front thereof and independently supplied with gas from the valves H* and H5; also `a'llghter 'which extends between said sections and togthe front where itmay be conveniently lighted, f

the gas being supplied from the. burners.

In detail, and as shown in Figs. 1 to 4,1

M. fThe opposite ends of these burners are supported upon a bracket N, while the tubes I and I- inpassing into the oven' are supported on tlie 'slotted plate O'and `clamped by a thumb screw P at the side of the oven wall. The thumb vscrew passing through a slotP in the plate which permits of a longitudinal adjustmentvthereof, the purpose of whichv is to engage and disengage the y'ends of the tubes I andl and the nozzles 'of their respective gas valves. The lighter tube Q, as shown in Figs. 1 to 4, extends centrally from one burner to the other and'fextends 'forward in the oven to the front thereof. This tube Q ispreferably a cored casting havingr apertures R R therein for engaging upwardly-projecting nipples S on the burners M and M, thereby forming a gas connection. i There is also a slit T formed by sawing which extends longitudinally ofthe tube Q so that by igniting the gas at the. front of the tube the fialne will run along the slitte eachof the burners M and M. Also this tube operates to automatically light one burner from the other.

In the modified construction shown in Fig. 5, .two separate gas passages connected respectively to the burner sections M and M and extend adjacent to each other to the front where the lighting of one will insurev lighting of the other, the construction being otherwise the same as previously described. i

In the construction shown in 'Fig'. 6, in place of the single lighter tube first described or the double lighter tube shown in Fig. 5, a lighter is formed of a section extending between the forward and rear burner sections and havin, gas communication with the latter, while another section,of the lighter extends forwardl to the oven front and is in gas communication with the forward burner section. These lighter sections are also preferably provided lwith jet openings therein instead of the slot, said openings being suf- Q. and Q2 are vficiently near stoleachother to causeA the llame to travelfrom/one to another. This -construction is valso preferably an integral 'iame will then travel back to the burner,

section and light the same. If it is desired to increase the heat thevalve H* is opened` andthe gas passing through the tube I into the burner section M will also fill the sectionof the lighter between the two burners and will be' lighted lbythe forward burner, thereby carrying the flame backward to the ed,l if so desired, the forward burner maybe turned out so that the operatork is freeto use either or both of the burner sections without rear burner. After the rear burner. is lightany danger of escapinggas from the section not in use. y The placing of all of the controlling valves in connection with a single manifold and arranged at the front of the open top section ofthe range isnot only of great convenience but also adds greatly to the appear-v ance of the stove. v Again, in this position v none of the burners will be disturbed by heated air or by the Aopening' or closing of the oven door, as is the case Withmany stove constructions heretofore used. 4 i

What we claim as our invention is:

1.An oven burner unit, comprising a lurality of spaced independently contro ledv 'burner portions, `and a lighter extending transversely to said burner-portions from a point remote therefrom to each thereof, said lighter being a substantially closed tube re ceivin gasfrom said burner portions and provic ed with restricted flame propagating openings. i

2. IAn oven burner unit, comprising a plurality of parallelly-arranged transverselyextending 4burner portions, each provided with an independent gas supplyconduit at one end thereof and sald conduits extending in the same planey to a point forward of each portion, and a lighter extending from a point alsoA forward of said burner portions to each thereof, being supplied with gas therefrom and provided with restricted flame propagating openings.

3. An oven burner unit, comprising a plurality of arallelly-arranged transverselyextending burner sections, gas supply tubes for said sections in the same plane therewith and extending at substantially right angles thereto, and a lighter tube extending between said burner sections and forward thereof in the direction of said gas supply tubes, said lighter tube receiving gas from said burner sections.

4.. An oven burner-unit, compri singla plurality of parallelly-arranged transversely extending burner sections, a gas supplytube extending from one end of each of said sections and bent lto extend forward at substantially right angles (to and in the same plane as sdid burner sections, and a lighter extending between said burner sections centrally thereof and forward in the direction of said gas supply tubes, said lighter tube receiving its gas supply from said sections.

5. An oven burner unit, comprising parallelly arranged i transversely extending burner sections, gas supply tubes for said sections respectively extending from one end of each and bent to extend forward in the same plane to the front and parallel to each other, anda lighter extending centrally' between said burner tubesl and to the front thereof and having gas connection therewith.

6. An oven burner unit, comprising a pair of L-shaped tubes having parallel trans versely-extending portions constituting burner sections and angling sections constituting independent supply conduits for said burner sections terminating in mixing chambers in transverse alinement with each other, and a. lighter tube centrally connecting said burner ,sections and extending forward therefrom, said lighter tube receiving gas supply from said burner sections.

An oven burner unit, comprising a plurality of spaced independently' controlled burner portions, and a lighter extending transversely of said portions from a point beyond the same to each thereof, said lighter having non-communicating conduits supplied with gas from the respective burner portions with restricted openings for the propagation of flame from one to the other.

8. An oven burner unit, comprising a plus rality of spaced independently controlled burner portions, and a lighter extending transversely between said sections and to a point beyond the same, said lighter having non-communicating conduits receiving gas from the respective burner portions and provided with restricted openings for the propagation of flame from one to the other.

9. The combination with a stove havin an open-top section with a vgas manifold in front thereof, and an oven section at one side of said open-top section and beyond said gas manifold, of an oven burner unit comprising a plurality of transverselyextend ing burner portions, gas supply tubes for the respective burner portions extending through the side of said oven and forward into operative relation to said gas manifold, and a lighter extending between said burner portions and beyond the same to the front of the oven, said lighter having non-,communieating conduits supplied with gas from the respective burner portions and being provided with restricted openings for the propagation of flame from the forward end .to each of said burner portions.

In testimony whereof we aliix our signatures.

HENRY D. SCHALL. RAN SOM W. DAVENPORT. 

